rcolavit
29.10.2020 •
Mathematics
At what distance from a 0.100 c charge will the electric field be 10000 n/c?
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Ответ:
Step-by-step explanation:
hello :
the discriminat of each quadratic equation : ax²+bx+c=0 (a ≠ 0) is :
Δ = b² -4ac
1 ) Δ > 0 the equation has two reals solutions : x = (-b±√Δ)/2a
2 ) Δ = 0 : one solution : x = -b/2a
3 ) Δ < 0 : no reals solutions
in this exercice : 6 = x² - 10x
x²-10x-6=0
a = 1 b= -10 c=-6
Δ =(-10)² -4(1)(-6) continu